Weyland, Paul, author
American Management Association, 2008
eBooks
Lambert, Brian, author
American Society for Training & Development, 2010
eBooks
Azar, Brian, author
[American Management Association, ], 2004
eBooks
Voe, Merrill De
Prentice-Hall, 1957
Buku Teks
Firmanzah, author
Salemba Empat, 2009
Buku Teks